带滑动板的 3 层钢结构建筑振动台试验数据驱动的结构健康监测

IF 4.6 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Yu-Tzu Huang, Daniel Yen-Hsun Chou, Chung-Che Chou, Chin-Hsiung Loh
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引用次数: 0

摘要

数据驱动的结构健康监测(SHM)是一种依赖于数据中包含的信息,并通过信号分析技术捕捉数据中包含的特征、变化和不确定性的方法。本文介绍了一座全尺寸三层楼建筑的振动台试验响应,该建筑的滑动楼板由水平屈曲约束支撑连接,用于消能。首先,通过一系列建筑物在不同强度等级的基础激励下的响应数据,确定了该结构的整体动态特性。发现了已识别模态参数的变化,如模态频率和模态振型。此外,还通过测量的响应和六自由度系统的运动方程,研究了滑动板对框架动态特性的影响。研究还比较了采用滑动板和固定(锁定)板所获得的层间刚度。利用 ARX/递归模型直接分析了滑动板的机理和动态特性,包括摩擦力的能量耗散、BRB 滞后行为以及强基激励时的意外阻尼力。提取的非预期阻尼力的表现类似于摩擦滞后响应,这需要在振动台试验的框架建模中加以考虑。通过数据分析得出的结论阐明了滑动板的重要方面,并证明了滑动板在降低框架响应方面的益处和适用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Data-Driven Structural Health Monitoring on Shaking Table Tests of a 3-Story Steel Building with Sliding Slabs

Data-Driven Structural Health Monitoring on Shaking Table Tests of a 3-Story Steel Building with Sliding Slabs

Data-driven structural health monitoring (SHM) is an approach which relies on the information contained in the data and through signal analysis techniques captures the features, variations, and uncertainties that data contain. This paper presents the response of shaking table tests of a full-scale, 3-story building with sliding slabs connected by horizontal buckling-restrained braces for energy dissipation. First, the global dynamic characteristics of the structure were identified from a series of the building response data under different intensity level of base excitations. The variation of the identified modal parameters, such as the mode frequencies and modal shapes, was discovered. The influence of sliding slabs on the dynamic characteristics of the frame was also investigated through the measured response and the equation of motion with six degree of freedom systems. Comparison on the achieved interstory stiffness due to the implementation of sliding slabs and the fixed (locked up) slab was examined. The mechanism and dynamic characteristics of sliding slabs, including energy dissipation of the friction force, BRB hysteresis behavior, and unintended damping force during strong base excitation were analyzed directly using the ARX/recursive model. The extracted unintended damping force performed like a friction hysteretic response, which needs to be considered for frame modeling in shaking table tests. The findings through the data analysis have clarified the important aspects of sliding slabs and demonstrated the benefits and applicability of sliding slabs on reducing the frame response.

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来源期刊
Structural Control & Health Monitoring
Structural Control & Health Monitoring 工程技术-工程:土木
CiteScore
9.50
自引率
13.00%
发文量
234
审稿时长
8 months
期刊介绍: The Journal Structural Control and Health Monitoring encompasses all theoretical and technological aspects of structural control, structural health monitoring theory and smart materials and structures. The journal focuses on aerospace, civil, infrastructure and mechanical engineering applications. Original contributions based on analytical, computational and experimental methods are solicited in three main areas: monitoring, control, and smart materials and structures, covering subjects such as system identification, health monitoring, health diagnostics, multi-functional materials, signal processing, sensor technology, passive, active and semi active control schemes and implementations, shape memory alloys, piezoelectrics and mechatronics. Also of interest are actuator design, dynamic systems, dynamic stability, artificial intelligence tools, data acquisition, wireless communications, measurements, MEMS/NEMS sensors for local damage detection, optical fibre sensors for health monitoring, remote control of monitoring systems, sensor-logger combinations for mobile applications, corrosion sensors, scour indicators and experimental techniques.
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